title: The 13-point Likert scale: a breakthrough in educational assessment.
authors.affiliation: Department of Radiology, Indiana University, 702 North Barnhill Drive, 1053, Indianapolis, IN 46202. Electronic address: rbgunder@iupui.edu.
authors.forename: Richard B
authors.initials: RB
authors.lastname: Gunderman
authors.forename: Stephen
authors.initials: S
authors.lastname: Chan
mesh_terms: D004521:Educational Measurement; D006801:Humans; D011871:Radiology / Q000193:education*